Honestly, i can't remember having a bad hair days, really. Because when i'm going to try a new product, i try it first in home (one day that i'm not going out) just to see how it goes on my hair and if it works. And i do the same when i'm going to try a new hairstyle... So, at least, i can't remember having a bad hair day.

I would like to get more volume, and i am not always happy about not having it, but that's another thing LOL.

Depends on how much time I will have the next day. If I can I'll start over if I won't have time I'll put it in a ponytail till I can wash again. If its a little frizz problem I'll try spritzing a mixture of water and conditioner and glazing a little bit of gel. If it still looks too frizzy I'll clip the top of my hair back halfway so my bottom curls are still showing and leave a well define curl or two out to frame my face.

If I stripped it with too much shampoo and it's really dry and frizzy, I ponytail it for two days then start over. If it's gross/oily/gunky, I ponytail it for the rest of the day and then wash it as soon as a can. If it's limp and flat, I put on a head band to get some body. If a small part particularly looks bad, I pin it back with a bow

I'm a braid girl myself. Side braids work wonders. I use them on lazy days too, even when my hair would probably be fine. Or on days I would probably need to co-wash if I wanted to do anything decent, but don't have time to. Or just because My morning job is working with kids anyway, and the babies will play with my hair when it's down, so I don't wear my hair down often during the week. Braids are definitely my go-to

I resist the urge to redo it that day, I know that almost always makes my hair worse, especially if it was due to a product it doesn't like. As far as the next day I do usually start my routine over if I can. Until then it stays in its trusty French twist.

I do what my friends lovingly termed, "THE BLOB"
It's really just a ponytail high on the top of my head, then I pin the ends all round and it's like a curly blob of curls. Not a bun, just curls, all over. The longer the hair the bigger the blob.
I'm actually wearing one today. It's what I do on bad hair days

I agree. It depends on what you mean by bad hair days. So if I were to overdo product I'd wash it out as soon as I could and put it up in the meanwhile. Also twisting and winding back a few pieces in the front and securing them with bobby pins (letting the tendrils escape underneath) can make my whole head of hair look better because it's atypical of me to get too much product on the underlayers. Usually quite the reverse. Stupid underlayers. You're so hard to reach!